Steering Switch Signal B Circuit (TEL Adapter Unit To Audio Unit)

STEERING SWITCH SIGNAL B CIRCUIT (TEL ADAPTER UNIT TO AUDIO UNIT)

Description

- Transmits the steering switch signal to TEL adapter unit.
- Transmits the steering switch signal to audio unit via TEL adapter unit.


Diagnosis Procedure


1. CHECK STEERING SWITCH SIGNAL B CIRCUIT (TEL ADAPTER UNIT TO AUDIO UNIT)

1.Turn ignition switch OFF.
2.Disconnect audio unit connector and TEL adapter unit connector.
3.Check continuity between audio unit harness connector and TEL adapter unit harness connector.





4.Check continuity between audio unit harness connector and ground.





Is inspection result normal?
YES- GO TO 2.
NO- Repair harness or connector.

2. CHECK AUDIO UNIT VOLTAGE

1.Connect audio unit connector and TEL adapter unit connector.
2.Turn ignition switch ON.
3.Check voltage between audio unit harness connector terminals.





Is inspection result normal?
YES- Replace TEL adapter unit. Without Navigation.
NO- Replace audio unit. Audio Unit.